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Online since: February 2013
Authors: Yin Dong Song, Chun Ping Wu, Yong Wang Li, Shou Guang Yao, Jin Ku Zhao
Numerical simulation can reflect a combustion process, which has been widely used for furnace combustion.
Numerical simulation was done under the same conditions as experiment.
Recirculation zone length of simulation is slightly shorter than recirculation zone length of experiment.
Fig.3 Velocity of air outlet at 28% load Burner flow field simulation Calculation of burner flow field.
“In Chinese” [9] Fujun Wang: Analysis of Computational Fluid Dynamics-principle and Application of CFD(Tsinghua University Press, China 2004).
Numerical simulation was done under the same conditions as experiment.
Recirculation zone length of simulation is slightly shorter than recirculation zone length of experiment.
Fig.3 Velocity of air outlet at 28% load Burner flow field simulation Calculation of burner flow field.
“In Chinese” [9] Fujun Wang: Analysis of Computational Fluid Dynamics-principle and Application of CFD(Tsinghua University Press, China 2004).
Online since: August 2011
Authors: Rang Shu Xu, Min Li Bai, Xiao Wen Chen, Jian Ming Yang, Zhi Wei Dong
Fig.3 The course of three-dimensional liner interpolation
Fig.4 Sketch map of three-dimensional liner interpolation
F The study of CFD numerical simulation and another measurement method
Good mobility of modern fighter is beneficial for air combat.
CFD numerical simulation is used in these conditions to simulate movement of lubrication oil plane in oil tank with the change of aircraft attitude.
(4) VOF model is used to track phase interface of continuous media by means of CFD numerical simulation.
CFD numerical simulation is used in these conditions to simulate movement of lubrication oil plane in oil tank with the change of aircraft attitude.
(4) VOF model is used to track phase interface of continuous media by means of CFD numerical simulation.
Online since: May 2012
Authors: Lih Shyng Shyu, Chi Ching Chang, Da Yung Wang, Ching Hai Lee, Yung Chia Hsiao, Ta Ming Shih
The CFD analysis was performed using 3- and 5- blades.
Figure 3 shows the CFD flow field of 5- blade’s.
Fig.1 MDU’s 2kW Fig. 2 A photograph of Fig. 3 The 5- blades CFD VAWT the 4kW VAWT speed-flow analysis Fig. 4 Blades system performance Fig. 5 Vertical blade’s master model (Power Efficiency vs Peak-Speed Ratio) Fig. 6 π-shape blades Fig. 7 The completion of blade system Generator rotator poles design The electricity generator rotator poles relates to rated of rotator rotation, and are represented using the following formula [4]: (1) After finishing the rotator design, the number of slots are designed which are related to the poles, phase number and wires winding method.
Table 6 is the simulation of displacement.
Figure 3 shows the CFD flow field of 5- blade’s.
Fig.1 MDU’s 2kW Fig. 2 A photograph of Fig. 3 The 5- blades CFD VAWT the 4kW VAWT speed-flow analysis Fig. 4 Blades system performance Fig. 5 Vertical blade’s master model (Power Efficiency vs Peak-Speed Ratio) Fig. 6 π-shape blades Fig. 7 The completion of blade system Generator rotator poles design The electricity generator rotator poles relates to rated of rotator rotation, and are represented using the following formula [4]: (1) After finishing the rotator design, the number of slots are designed which are related to the poles, phase number and wires winding method.
Table 6 is the simulation of displacement.
Online since: February 2026
Authors: Intan Mahardika, Zener Sukra Lie, Immanuel Johanes Aditya
The design was analyzed using Computational Fluid Dynamics (CFD) software simulation, while the prototype was tested on a flow bench.
Autodesk Fusion 360 software is used to design the CAI prototype, while CFD software helps to understand the airflow phenomena for analysis.
The purpose of testing the design in CFD software is to understand the airflow phenomena occurring in the design.
Autodesk Fusion 360 software is used to design the CAI prototype, while CFD software helps to understand the airflow phenomena for analysis.
The purpose of testing the design in CFD software is to understand the airflow phenomena occurring in the design.
Online since: November 2015
Authors: Sorin Arsene
With the results of the simulation we have done a comparative analysis on the additional vertical forces introduced by wind for the cases analyzed.
For air flow simulation are used the SolidWorks Flow Simulation software which has include the model k-ε for turbulent regime.
Stabilized values of the vertical aerodynamic forces resulting from the simulations performed for the 25 cases considered are shown in the Table. 1.
The vertical aerodynamic forces obtained during the simulation, in case of the angles analysed The aerodynamic forces vertical obtained in time of simulation airflow taking into account of the situations for the wind speed and its direction, front of the longitudinal axis are shown in Fig 6.
Rocchi, Some considerations on the aerodynamics of high speed pantograph: cfd and wind tunnel tests, BBAA VI International Colloquium on: Bluff Bodies Aerodynamics & Applications, Milano, 2008
For air flow simulation are used the SolidWorks Flow Simulation software which has include the model k-ε for turbulent regime.
Stabilized values of the vertical aerodynamic forces resulting from the simulations performed for the 25 cases considered are shown in the Table. 1.
The vertical aerodynamic forces obtained during the simulation, in case of the angles analysed The aerodynamic forces vertical obtained in time of simulation airflow taking into account of the situations for the wind speed and its direction, front of the longitudinal axis are shown in Fig 6.
Rocchi, Some considerations on the aerodynamics of high speed pantograph: cfd and wind tunnel tests, BBAA VI International Colloquium on: Bluff Bodies Aerodynamics & Applications, Milano, 2008
Online since: December 2012
Authors: Shi Gang Wang, Xian Feng Du, Dong Sheng Li, Qing Ming Hu
In 2002, Wang Changrui calculated the temperature field of new hydrostatic bearing based on the CFD theory by using four-node isoparametric element method, and finally verified the experiment on the reversible hydrodynamic thrust bearing experimental platform [3].
The oil film performance affected by the geometry characteristic of round chamber and viscosity change caused by viscosity, viscosity-temperature and viscosity-pressure was studied by modeling mathematical model in order to simulate the three-dimension flow in hydrostatic rotational platform and selecting laminar model, base on CFD theory, and contrasted the performance difference between newtonian fluid and non-newtonian fluid [6].
(a) The base model (b) The equipment model (c) The simulatonal model (d) The oil pad model Fig.2 The whole model of the simulation experiments Meshing of Hydrostatic Bearing Model The finite element software GAMBIT is used to generate the simulational mesh of hydrostatic mesh.
Fig.8 Relationship between rotational speed and highest temperature Conclusions (1) In this simulation experiment, finite element software FLUENT6.3 is used to obtain the temperature field of the oil pad with the software GAMBIT meshing, which is almost hard to get by real instrument for the tiny depth of the oil film.
(2) The data obtained in this simulation is almost same as that gotten by temperature sensors, which contributes to the layout of the heat transfers of the hydrostatic bearing with heat transfers.
The oil film performance affected by the geometry characteristic of round chamber and viscosity change caused by viscosity, viscosity-temperature and viscosity-pressure was studied by modeling mathematical model in order to simulate the three-dimension flow in hydrostatic rotational platform and selecting laminar model, base on CFD theory, and contrasted the performance difference between newtonian fluid and non-newtonian fluid [6].
(a) The base model (b) The equipment model (c) The simulatonal model (d) The oil pad model Fig.2 The whole model of the simulation experiments Meshing of Hydrostatic Bearing Model The finite element software GAMBIT is used to generate the simulational mesh of hydrostatic mesh.
Fig.8 Relationship between rotational speed and highest temperature Conclusions (1) In this simulation experiment, finite element software FLUENT6.3 is used to obtain the temperature field of the oil pad with the software GAMBIT meshing, which is almost hard to get by real instrument for the tiny depth of the oil film.
(2) The data obtained in this simulation is almost same as that gotten by temperature sensors, which contributes to the layout of the heat transfers of the hydrostatic bearing with heat transfers.
Online since: January 2013
Authors: Hai Li Liu, Feng Quan Zhang, Li Li Guo, Liu Qing Xu
Grids are divided to guarantee the simulation accuracy.
Therefore, we design an new internal-mixing nozzle for the icing experiment, and present a numerical simulation method based on the CFD software FLUENT.
Fields simulation setting.
Inner flow field simulation results and analysis.
External flow field simulation results and analysis.
Therefore, we design an new internal-mixing nozzle for the icing experiment, and present a numerical simulation method based on the CFD software FLUENT.
Fields simulation setting.
Inner flow field simulation results and analysis.
External flow field simulation results and analysis.
Online since: August 2013
Authors: Qing Xi Cao, Hui Liu, Shao Hua Wu, Wen Yan Wu, Sui Ying Yu, Zhen Zhong Li, Chun Hui Yang
Numerical Study of Selective Non-catalytic Reduction Process in Large Utility Boiler
Qingxi CAO1, Hui LIU1,a, Shaohua WU1, Wenyan WU1, Suiying YU2, Zhenzhong LI2, Chunhui YANG1
1 Harbin Institute of Technology, Harbin 150001, China
2 The State Technology Research Center of Power Plant, Shenyang 110034, China
aenergyhit@163.com
Keywords: large capacity utility boiler; SNCR; numerical simulation; CO additive
Abstract.
To provide a theoretical guidance for the application of selective non-catalytic reduction (SNCR) in a large capacity utility boiler, numerical study of SNCR process in a 600 MW utility boiler was performed based on computational fluid dynamics (CFD) code Fluent.
Kim et al. [9] conducted numerical simulation of SNCR on a garbage incinerator, which burns 200t garbage a day.
Wang et al. [10-11] performed numerical simulations of SNCR on a 410 t/h coal-fired boiler.
Conclusions This work performed numerical study on SNCR process in a 600 MW utility boiler using the CFD code FLUENT.
To provide a theoretical guidance for the application of selective non-catalytic reduction (SNCR) in a large capacity utility boiler, numerical study of SNCR process in a 600 MW utility boiler was performed based on computational fluid dynamics (CFD) code Fluent.
Kim et al. [9] conducted numerical simulation of SNCR on a garbage incinerator, which burns 200t garbage a day.
Wang et al. [10-11] performed numerical simulations of SNCR on a 410 t/h coal-fired boiler.
Conclusions This work performed numerical study on SNCR process in a 600 MW utility boiler using the CFD code FLUENT.
Online since: February 2011
Authors: He Li Yang
And this is the ultimate clearance.
3.The finite element analysis
This section is based on finite element theory and making use of FLOTRAN CFD of ANSYS to analyze the process briefly by taking Santana cars’ engine for example.
Figuer 1.The Lubricating Film Model 3.3 Grid partition This paper used FLUID142 hexahedral 8-node unit in FLOTRAN CFD of ANSYS.
Hydrodynamic Lubrication Sliding Bearing Dynamic Characteristic Research Based on the CFD.
Radial Dynamic Pressure Sliding Bearing Spindle Axis Orbit Dynamic Simulation.
Figuer 1.The Lubricating Film Model 3.3 Grid partition This paper used FLUID142 hexahedral 8-node unit in FLOTRAN CFD of ANSYS.
Hydrodynamic Lubrication Sliding Bearing Dynamic Characteristic Research Based on the CFD.
Radial Dynamic Pressure Sliding Bearing Spindle Axis Orbit Dynamic Simulation.
Online since: November 2012
Authors: Li Hua Fan, Guo Huang Cai
Recent years, due to the development of numerical simulation method, the gas flow conditions within the valve was gradually well revealed,which made an inevitable trend in studying the aerodynamic noise characteristics with the combination of the flow field simulation.
The numerical simulation research status of the valve.
With the development of the computer technology and CFD-Computational Fluid Dynamics, numerical simulation plays an increasingly important role in solving flow problems.
In recent years, in the fluids research inside of the valve, numerical simulation was also widely used.
As mentioned above, the acoustic frequency of the turbulent mixing noise and broadband shock noise generated inside of the valve is high, and thus in the simulation of unsteady flow, it must use a very small time step.In addition, the large-eddy simulation is recognized an accurate turbulence model, suitable for noise prediction, however, large-eddy simulation has a high requirement on the grid scale.
The numerical simulation research status of the valve.
With the development of the computer technology and CFD-Computational Fluid Dynamics, numerical simulation plays an increasingly important role in solving flow problems.
In recent years, in the fluids research inside of the valve, numerical simulation was also widely used.
As mentioned above, the acoustic frequency of the turbulent mixing noise and broadband shock noise generated inside of the valve is high, and thus in the simulation of unsteady flow, it must use a very small time step.In addition, the large-eddy simulation is recognized an accurate turbulence model, suitable for noise prediction, however, large-eddy simulation has a high requirement on the grid scale.